/**
* Draws the rotated text.
*
* @param gc the graphics context
* @param text the text
* @param x the x coordinate
* @param y the y coordinate
* @param angle the angle
*/
private void drawRotatedText(GC gc, String text, float x, float y, int angle) {
int textWidth = gc.textExtent(text).x;
int textHeight = gc.textExtent(text).y;
// create image to draw text
Image image = new Image(Display.getCurrent(), textWidth, textHeight);
GC tmpGc = new GC(image);
tmpGc.setForeground(getForeground());
tmpGc.setBackground(gc.getBackground());
tmpGc.setFont(getFont());
tmpGc.drawText(text, 0, 0);
// set transform to rotate
Transform transform = new Transform(gc.getDevice());
transform.translate(x, y);
transform.rotate(360 - angle);
gc.setTransform(transform);
// draw the image on the rotated graphics context
gc.drawImage(image, 0, 0);
// dispose resources
tmpGc.dispose();
transform.dispose();
image.dispose();
gc.setTransform(null);
}
/**
* Renders a label for the given rectangle. The label is fitted into the rectangle if possible.
*
* @param event the paint event to work with on
* @param text the text to render
* @param color the color to use
* @param bounds the rectangle bounds
*/
protected void render(
final PaintEvent event, final String text, final RGB color, final IRectangle<N> bounds) {
if (text != null) {
// quite strange to create a new font object all the time?
// it did not work when I tried to reuse a long-living font object!
final Font font = new Font(event.display, fontName, 16, SWT.BOLD);
try {
event.gc.setFont(font);
final Color c = new Color(event.display, color);
try {
event.gc.setForeground(c);
} finally {
c.dispose();
}
final Point p = event.gc.textExtent(text);
p.x = p.x * 12 / 10; // make some space
final float scale =
(float) Math.min(bounds.getWidth() / (double) p.x, bounds.getHeight() / (double) p.y);
final Transform transform = new Transform(event.display);
try {
transform.translate(
(int) (bounds.getX() + bounds.getWidth() / 12d),
bounds.getY() + (bounds.getHeight() - scale * p.y) / 2);
transform.scale(scale, scale);
event.gc.setTransform(transform);
event.gc.drawString(text, 0, 0, true);
} finally {
transform.dispose();
}
} finally {
font.dispose();
}
}
}
/**
* Applies a scale transform.
*
* @param scaleX the scale factor along the x-axis.
* @param scaleY the scale factor along the y-axis.
*/
@Override
public void scale(double scaleX, double scaleY) {
Transform swtTransform = new Transform(this.gc.getDevice());
this.gc.getTransform(swtTransform);
swtTransform.scale((float) scaleX, (float) scaleY);
this.gc.setTransform(swtTransform);
swtTransform.dispose();
}
/**
* Applies a translation.
*
* @param x the translation along the x-axis.
* @param y the translation along the y-axis.
*/
@Override
public void translate(int x, int y) {
Transform swtTransform = new Transform(this.gc.getDevice());
this.gc.getTransform(swtTransform);
swtTransform.translate(x, y);
this.gc.setTransform(swtTransform);
swtTransform.dispose();
}
/**
* Concatenates the specified transform to the existing transform.
*
* @param t the transform.
*/
@Override
public void transform(AffineTransform t) {
Transform swtTransform = new Transform(this.gc.getDevice());
this.gc.getTransform(swtTransform);
swtTransform.multiply(getSwtTransformFromPool(t));
this.gc.setTransform(swtTransform);
swtTransform.dispose();
}
/**
* Returns the current transform.
*
* @return The current transform.
*/
@Override
public AffineTransform getTransform() {
Transform swtTransform = new Transform(this.gc.getDevice());
this.gc.getTransform(swtTransform);
AffineTransform awtTransform = toAwtTransform(swtTransform);
swtTransform.dispose();
return awtTransform;
}
@Override
public void render(
final PaintEvent event,
final ITreeModel<IRectangle<TaxonomyNode>> model,
final IRectangle<TaxonomyNode> rectangle,
final IColorProvider<TaxonomyNode, Color> colorProvider,
final ILabelProvider<TaxonomyNode> labelProvider) {
TaxonomyNode item = rectangle.getNode();
if (item.getClassification() != null) return;
Color oldForeground = event.gc.getForeground();
Color oldBackground = event.gc.getBackground();
Rectangle r =
new Rectangle(
rectangle.getX(), rectangle.getY(), rectangle.getWidth(), rectangle.getHeight());
this.colorProvider.drawRectangle(model.getRoot().getNode(), item, event.gc, r);
String label = item.getName();
String info =
String.format(
"%s (%s%%)",
Values.Amount.format(item.getActual()), // $NON-NLS-1$
Values.Percent.format(
(double) item.getActual() / (double) this.model.getRootNode().getActual()));
event.gc.setForeground(Colors.getTextColor(event.gc.getBackground()));
Point labelExtend = event.gc.textExtent(label);
Point infoExtend = event.gc.textExtent(info);
int width = Math.max(labelExtend.x, infoExtend.x);
if (width <= rectangle.getWidth() || rectangle.getWidth() > rectangle.getHeight()) {
event.gc.drawText(label, r.x + 2, r.y + 2, true);
event.gc.drawText(info, r.x + 2, r.y + 2 + labelExtend.y, true);
} else {
final Transform transform = new Transform(event.display);
try {
transform.translate(r.x, r.y);
transform.rotate(-90);
event.gc.setTransform(transform);
event.gc.drawString(label, -labelExtend.x - 2, 2, true);
event.gc.drawString(info, -infoExtend.x - 2, 2 + labelExtend.y, true);
} finally {
transform.dispose();
}
}
event.gc.setForeground(oldForeground);
event.gc.setBackground(oldBackground);
}
/**
* Internal method to convert a AWT transform object into a SWT transform resource. If a
* corresponding SWT transform instance is already in the pool, it will be used instead of
* creating a new one. This is used in {@link #setTransform()} for instance.
*
* @param awtTransform The AWT transform to convert.
* @return A SWT transform instance.
*/
private Transform getSwtTransformFromPool(AffineTransform awtTransform) {
Transform t = (Transform) this.transformsPool.get(awtTransform);
if (t == null) {
t = new Transform(this.gc.getDevice());
double[] matrix = new double[6];
awtTransform.getMatrix(matrix);
t.setElements(
(float) matrix[0],
(float) matrix[1],
(float) matrix[2],
(float) matrix[3],
(float) matrix[4],
(float) matrix[5]);
addToResourcePool(t);
this.transformsPool.put(awtTransform, t);
}
return t;
}
public void translate(double tx, double ty) {
if (_transform == null) {
_transform = new Transform(_gc.getDevice());
}
_transform.translate((int) tx, (int) ty);
_gc.setTransform(_transform);
if (_clippingArea != null) {
AffineTransform t = new AffineTransform();
t.translate(-tx, -ty);
_clippingArea.transform(t);
}
}
/** Clean used resources. */
public void clean() {
if (_clippingPath != null) {
_gc.setClipping((Rectangle) null);
_clippingPath.dispose();
_clippingPath = null;
_clippingArea = null;
}
if (_color != null) {
_color.dispose();
_color = null;
}
if (_transform != null) {
_gc.setTransform(null);
_transform.dispose();
}
}
/**
* Converts an SWT transform into the equivalent AWT transform.
*
* @param swtTransform the SWT transform.
* @return The AWT transform.
*/
private AffineTransform toAwtTransform(Transform swtTransform) {
float[] elements = new float[6];
swtTransform.getElements(elements);
AffineTransform awtTransform = new AffineTransform(elements);
return awtTransform;
}
public static /* synchronized */ Image resize(
final Display display,
final Image srcImage,
final int newWidth,
final int newHeight,
final int antialias,
final int interpolation,
final Rotation exifRotation) {
if (srcImage == null) {
return null;
}
final Rectangle originalImageBounds = srcImage.getBounds();
final int originalWidth = originalImageBounds.width;
final int originalHeight = originalImageBounds.height;
final int srcWidth = originalWidth;
final int srcHeight = originalHeight;
final int destWidth = newWidth;
final int destHeight = newHeight;
int imgWidth = newWidth;
int imgHeight = newHeight;
// OSX is rotating the image automatically
boolean isNoAutoRotate = UI.IS_OSX == false;
isNoAutoRotate |= _isRotateImageAutomatically == false;
if (isNoAutoRotate) {
if (exifRotation == Rotation.CW_90 || exifRotation == Rotation.CW_270) {
// swap width/height
imgWidth = newHeight;
imgHeight = newWidth;
}
}
final Image scaledImage = new Image(display, imgWidth, imgHeight);
final GC gc = new GC(scaledImage);
Transform transformation = null;
try {
gc.setAdvanced(true);
gc.setAntialias(antialias);
gc.setInterpolation(interpolation);
// gc.setAntialias(SWT.ON);
// gc.setInterpolation(SWT.LOW);
int destX = 0;
int destY = 0;
if (exifRotation != null && isNoAutoRotate) {
final int imgWidth2 = imgWidth / 2;
final int imgHeight2 = imgHeight / 2;
transformation = new Transform(display);
transformation.translate(imgWidth2, imgHeight2);
if (exifRotation == Rotation.CW_90) {
transformation.rotate(90);
destX = -imgHeight2;
destY = -imgWidth2;
} else if (exifRotation == Rotation.CW_180) {
// this case is not yet tested
transformation.rotate(180);
destX = -imgWidth2;
destY = -imgHeight2;
} else if (exifRotation == Rotation.CW_270) {
transformation.rotate(270);
destX = -imgHeight2;
destY = -imgWidth2;
}
gc.setTransform(transformation);
}
gc.drawImage(
srcImage, //
0,
0,
srcWidth,
srcHeight,
//
destX,
destY,
destWidth,
destHeight);
} finally {
// ensure resources are disposed when an error occures
gc.dispose();
if (transformation != null) {
transformation.dispose();
}
}
return scaledImage;
}
